3d Printing of High Stiffness-To-Weight Reflective Optics

2. The device of claim 1 wherein said 3D printed sacrificial integrated strictures are tripods, said tripods comprising legs with varied lengths and said top planar surface.

3. The device of claim 1 comprising a powder metal material callout of an AlSi10Mg alloy.

4. The device of claim 1 wherein said lattice comprises a printed lattice topology selected from triangular hybrid, truncated octahedron, gyroids, cubic truss, octet truss, truncated tetrahedron, and Archimedean solids.

5. The device of claim 1 wherein said lattice comprises an open-cell tetragonal printed lattice topology.

6. The device of claim 1 wherein said lattice comprises tetragonal unit cells of about 0.40 inch by about 0.40 inch.

7. The device of claim 1 wherein said lattice comprises struts of about 0.040 inch diameter.

8. The device of claim 7 wherein said mirror has a surface quality greater than or equal to about 64 Root Mean Square (RMS).

9. The device of claim 1 wherein said stiffness to weight ratio comprises a specific stiffness of about 150 E/ρ and a Young's modulus of elasticity of about 300 GPa.